diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 9da7155..2cbfdae 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -18,6 +18,8 @@ jobs:
     runs-on: ubuntu-latest
     needs: lint-bash-scripts
     steps:
+      - name: Checkout
+        uses: actions/checkout@v1    
       - name: lint zammad dockerfile
         uses: brpaz/hadolint-action@master
         with: